Reviewed by Dr. Nicole M. Berger, DDS — South Florida Smile Spa, Pompano Beach, FL
KöR whitening in Pompano Beach is the system South Florida Smile Spa reaches for when ordinary whitening has not worked or will not: deep yellow, grey or banded staining, tetracycline discoloration from childhood antibiotics, teeth that have darkened with age, and patients who have been told their teeth simply do not whiten. KöR is different from a one-hour lamp treatment. Its gels are refrigerated from the moment they are made until they go into your trays, and the trays are made to seal at the gumline so saliva cannot wash the gel out, which keeps the peroxide active for six to ten hours overnight instead of twenty-five minutes. The result is deeper, more even whitening with less sensitivity, built over two weeks at home with an optional in-office visit at the end. Dr. Nicole M. Berger explains below how KöR works, which protocol suits which staining, how it compares with Zoom and Opalescence, and what to expect.
Quick answer
KöR is a dentist-supervised whitening system built around two things: peroxide gels that are kept refrigerated so they stay at full strength, and custom KöR-Seal trays that keep saliva out so the gel keeps working through a full night’s sleep. Treatment is two weeks of nightly tray wear at home, with an in-office conditioning visit at the start and, for the Max and Ultra protocols, a chairside visit at the end. Because the gel works for hours rather than minutes, KöR lightens staining that other systems leave behind, including grey and tetracycline discoloration, with notably less sensitivity than lamp-based whitening. At South Florida Smile Spa in Pompano Beach, Dr. Berger chooses between KöR Home, Max and Ultra after an exam and shade assessment, and whitening is sequenced before any veneers or bonding are matched. Crowns, veneers and fillings do not lighten with any system.

Why It Works
KöR whitening in Pompano Beach: what makes the system different
Most whitening fails for two reasons: the peroxide has lost strength before it reaches the tooth, and saliva dilutes it within half an hour. KöR was designed around both problems.
- Refrigerated gel. Peroxide breaks down at room temperature, so a gel that has sat in a warehouse and a drawer may be a fraction of its label strength. KöR gels are refrigerated from manufacture to delivery to your fridge.
- KöR-Seal trays. Trays are made from precise impressions of your teeth with a sealed edge at the gumline that keeps saliva out and gel in, so the peroxide stays active for six to ten hours instead of twenty-five to thirty-five minutes.
- Overnight wear. Because the gel keeps working, the trays are worn while you sleep, which is why KöR reaches stains that short daytime treatments cannot.
- Low sensitivity. A desensitizing gel is built into the protocol and the gentle, long-contact chemistry avoids the zings of high-strength lamp whitening.
- Protocols for every case. KöR Home for routine staining, KöR Max for most patients, and KöR Ultra for tetracycline and the darkest teeth, which may take several weeks.
- Lasting with maintenance. After the initial treatment, a night of tray wear every month or two keeps the result, so the whitening does not fade the way one-visit systems do.
The American Dental Association’s page on teeth whitening explains why a dental exam comes first and why a dentist should supervise higher-strength or longer whitening protocols.
KöR protocols and how they compare with Zoom and Opalescence
| KöR Home | KöR Max | KöR Ultra | Zoom | Opalescence | |
|---|---|---|---|---|---|
| Format | Two weeks nightly trays | In-office conditioning, two weeks nightly trays, in-office finish | Extended nightly trays over several weeks, two in-office visits | One in-office visit with LED lamp | One to two weeks of daily tray wear |
| Best for | Routine yellowing; maintenance | Most patients; stubborn or uneven staining | Tetracycline, grey and very dark teeth | A deadline; fast visible change | Gradual, adjustable whitening; sensitive teeth |
| Depth of whitening | Good | Excellent | The most of any system | Good, settles after a week | Good |
| Sensitivity | Low | Low | Low | Most of the five | Low to moderate |
| Gel handling | Refrigerated | Refrigerated | Refrigerated | Applied chairside | Room temperature |
| Longevity | Lasting with monthly maintenance | Lasting with maintenance | Lasting with maintenance | One to two years with top-ups | One to three years with refills |
| Provided at SFSS | Yes | Yes | Yes | Yes | Yes |
The Process
KöR whitening at South Florida Smile Spa, step by step
- Exam and shade. Dr. Berger checks for decay, exposed roots and gum problems, records the starting shade and photographs the teeth, and chooses the KöR protocol for your staining.
- Impressions and trays. Precise impressions are taken and sent to the KöR lab, which makes the sealed trays; they are back in about two weeks.
- Conditioning visit. For Max and Ultra, a short in-office visit starts the treatment and the trays, refrigerated gels and desensitizer are fitted and explained.
- Two weeks at home. Trays are worn every night while you sleep; the gel goes in the fridge between uses. Sensitivity is rare and managed with the included desensitizing gel.
- Finishing visit. For Max and Ultra, an in-office session with a higher-strength gel completes the lift, and the final shade is recorded next to the starting photographs.
- Maintenance. One night of tray wear every month or two, with gel refills from the office, keeps the shade indefinitely.

Tetracycline and grey staining
Tetracycline taken in childhood, when the adult teeth were forming, binds into the dentine and leaves grey, blue or brown bands that ordinary whitening barely touches, and many patients have been told to accept veneers or nothing. KöR Ultra, used over several weeks with two chairside visits, lightens most tetracycline staining substantially, and for some patients enough to avoid veneers altogether. The same long-contact chemistry helps with the grey of age-darkened teeth, fluorosis mottling and teeth darkened after trauma. Dr. Berger sets expectations from the photographs at the first visit, because tetracycline cases improve over weeks rather than days and the darkest bands lighten last.
KöR before veneers, bonding or a smile makeover
Whitening comes before any cosmetic restoration, because porcelain and composite do not change color and must be matched to the finished shade of the natural teeth. For a patient planning veneers on the upper front teeth, KöR on the lower arch and the upper back teeth sets the shade the veneers are matched to; for a patient hoping to avoid veneers, KöR is the first thing to try. Shade selection for restorations is scheduled at least two weeks after whitening finishes, when the color has settled. Our smile makeover and veneers pages explain the sequencing.
Why the trays are not the trays you had before
A standard whitening tray is a thin shell trimmed near the gumline; saliva seeps in within minutes and the gel is diluted and gone in half an hour. KöR-Seal trays are made by the KöR laboratory from detailed impressions with a design that seals against the teeth at the gumline, keeping saliva out and gel in for the whole night. The difference in contact time, six to ten hours against thirty minutes, is the reason KöR reaches deeper staining with a lower-concentration, gentler gel, and why the trays are worth keeping carefully: they are used for the maintenance nights for years.
Sensitivity and comfort
KöR was designed to minimize sensitivity, and most patients report none. The protocol includes a desensitizing gel used in the trays before the whitening gel, the carbamide peroxide used at home releases peroxide slowly through the night, and there is no heat or light. Patients with a history of sensitivity are started on a sensitivity toothpaste beforehand and can shorten wear on any night that feels tender. Gum irritation, a white line at the gumline that fades within an hour, means too much gel was used and is corrected by using less.
Keeping the result
KöR describes its results as permanent with maintenance, and in practice that means one night of tray wear every month or two, using refrigerated gel from the office, to counter the daily staining from coffee, tea and wine. Patients who whiten before a reunion, wedding or new veneers and then forget the trays will see the shade drift back over a year or two the way any whitening does; patients who keep up the occasional night hold the shade indefinitely. Trays are brought to cleanings to be checked and refitted if a tooth has been restored.
Cost and insurance
KöR costs more than a lamp treatment because of the laboratory-made trays, the refrigerated gel supply and the in-office visits; it is quoted as a single written fee for the chosen protocol, with gel refills for maintenance priced separately. Whitening is cosmetic and is not covered by dental insurance, although the exam and any cleaning that come first usually are. Financing is available, and patients planning cosmetic work often bundle KöR with it.

Care in Pompano Beach
Why patients choose South Florida Smile Spa for KöR
- The system for hard cases. KöR is here specifically for the grey, banded and tetracycline teeth that other whitening fails, with Dr. Berger choosing between Home, Max and Ultra for each patient.
- A cosmetic dentist’s sequencing. Whitening is planned as the first stage of any veneer, bonding or makeover plan, with shades matched after the color settles.
- Low sensitivity by design. No lamp, no heat, a built-in desensitizer, and a protocol adjusted for patients who have found whitening uncomfortable before.
- Three systems, one recommendation. Zoom, KöR and Opalescence are all offered, so the advice is which fits your staining and timeline rather than which is on the shelf.
- Honest expectations. Starting photographs, a realistic forecast for tetracycline cases, and a clear statement of what will and will not lighten.
KöR patients come to us from Pompano Beach, Lighthouse Point, Deerfield Beach, Fort Lauderdale and Coconut Creek, many after whitening elsewhere disappointed them.
Teeth that other whitening could not lighten
Book a whitening consultation with Dr. Berger. A shade assessment, a frank forecast for your staining, and the KöR protocol that fits it.
South Florida Smile Spa · Dr. Nicole M. Berger, DDS · 572 E McNab Rd, Suite 102, Pompano Beach, FL 33060 · (954) 785-1100
Frequently Asked Questions
What is KöR whitening?
A dentist-supervised whitening system that pairs refrigerated peroxide gels, kept at full strength from manufacture to your fridge, with laboratory-made KöR-Seal trays that keep saliva out so the gel works for six to ten hours overnight. Treatment is two weeks of nightly wear, with in-office visits for the Max and Ultra protocols.
Is KöR better than Zoom?
For deep, grey or tetracycline staining, yes, because the gel works for hours rather than minutes. For a patient with ordinary yellowing who wants a result this week, Zoom is faster. Dr. Berger offers both and recommends one after seeing your teeth.
Does KöR work on tetracycline stains?
It is the whitening system most likely to. KöR Ultra, used over several weeks with two in-office visits, lightens most tetracycline staining substantially, though the darkest bands lighten last and a few cases still need veneers. Expectations are set from photographs at the first visit.
Does KöR cause sensitivity?
Rarely. There is no lamp or heat, the home gel releases peroxide slowly, and a desensitizing gel is part of the protocol. Patients who have found other whitening painful usually tolerate KöR well.
How long does KöR take?
About two weeks of nightly tray wear for Home and Max, plus the time for the lab to make the trays and the in-office visits for Max. Ultra for tetracycline runs several weeks. The result builds gradually rather than appearing in one visit.
How long does KöR last?
Indefinitely with maintenance: one night of tray wear every month or two using refrigerated gel from the office. Without maintenance, the shade drifts back over a year or two like any whitening.
Why does the gel need to be refrigerated?
Peroxide loses strength at room temperature. KöR gels are refrigerated from the factory to the office to your home so the concentration on the label is what reaches your teeth, which is part of why the system outperforms gels that have sat on a shelf.
Will KöR whiten my crowns, veneers or fillings?
No whitening system changes the color of restorations. Dr. Berger notes existing crowns, veneers and fillings at the exam and plans replacements after whitening if their shade will no longer match.
Do you see patients from outside Pompano Beach?
Yes. Whitening patients come from Lighthouse Point, Deerfield Beach, Fort Lauderdale, Coconut Creek and across Broward County; KöR needs only two or three short visits. The office is at 572 E McNab Rd, Suite 102, Pompano Beach. Call (954) 785-1100 or request an appointment.
